(19)
(11) EP 0 289 859 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
31.05.1989 Bulletin 1989/22

(43) Date of publication A2:
09.11.1988 Bulletin 1988/45

(21) Application number: 88106268.1

(22) Date of filing: 20.04.1988
(51) International Patent Classification (IPC)4: C08J 9/28, C08J 9/36, C08J 5/18, C08L 23/06
(84) Designated Contracting States:
DE FR GB IT

(30) Priority: 24.04.1987 US 42404

(71) Applicant: PPG INDUSTRIES, INC.
Pittsburgh Pennsylvania 15272 (US)

(72) Inventors:
  • Young, James
    Corvallis Oregon 97330 (US)
  • Leatherman, Dennis Daniel
    Pittsburgh Pennsylvania 15241 (US)

(74) Representative: Sternagel, Hans-Günther, Dr. et al
Patentanwälte Dr. Michael Hann Dr. H.-G. Sternagel, Sander Aue 30
51465 Bergisch Gladbach
51465 Bergisch Gladbach (DE)


(56) References cited: : 
   
     
    Remarks:
    A request for addition of a page to the originally filed application documents has been filed pursuant to Rule 88 EPC. A decision on the request will be taken during the proceedings before the Examining Division (Guidelines for Examination in the EPO, A-V, 2.2).
     


    (54) Printed microporous material


    (57) Microporous material substrate comprising (1) a matrix consisting essentially of linear ultramolecular weight polyolefin, (2) a large proportion of finely divided water-insoluble siliceous filler, and (3) interconnecting pores is printed with printing ink.





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